One of Hennessy's most visible performances was uncredited. In 1995, Jill Hennessy, who played Claire Kincaid on the NBC crime drama Law & Order, made a couple of crossover appearances as Kincaid on another series, Homicide: Life on the Street. During the filming of one of these crossovers, the production schedules of both shows overlapped. As a result, Jacqueline was recruited to play Kincaid in some courtroom scenes filmed for the Law & Order episode "Corpus Delicti", which aired in January 1996.